Automatic flush-tank



(No Model.)

B. O. HUNT. AUTOMATIC PLUSH TANK.

No. 435,039. Patented Aug. 26, 1890.

they appear when the tank has its UNITED STATES PATENT OFFICE.

EDGAR O. HUNT, OF MELROSE, MASSACHUSETTS.

AUTOMATIC FLUSH-TANK.

SPECIFICATION forming part of Letters Patent No. 435,039 dated :August 26, 1890.

Application filed March 17, 1890. Serial No. 344,181. (No model.)

To all whom it may concern:

Be it known that I, EDGAR O. HUNT, of Melrose, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvementsin Automatic Flush- Tanks, of which the following, taken in connection with the accompanying drawings, is a specification.

The object of my invention is to so improve the construction of automatic flush-tanks as to make their operation more positive.

The device by which the automatic flushing action is obtained consists of an improved float and a trip-lever and stop, the action of which will be explained by reference to the accompanying drawings, in which Figure 1 is a vertical longitudinal section showing a tank and the operating parts as full sup ply of water and both the inlet and outlet valves are closed. Fig. 2 is a vertical longitudinal section showing the tank and its operating parts as they appear when the valves are open and much of the water has left the tank, the outlet or flush-valve lever being locked up by the triplever. Fig. 3 is a view of details, showing the flush-valve-lever looking device or trip-lever.

My flush-tank is represented by A. This tank has an inlet or supply pipe and automatic cook 15, with a float and float-stem O 0, made in the usual manner.

The flushing-pipe is indicated by 0, Fig. 1. This flushing-pipe has a drop valve D, operated by a chain D, adjustable link d, and lever E. The lever E is pivoted at E, and is moved by means of an ordinary pull cord or chain P.

I will now describe the parts that I consider as new in my device.

L L is a bent trip-lever pivoted at L, the end L having a weight L attached to it, so that when the lever is free the part L will stand in the position indicated in Fig. 2-,- that is, vertically under the flush-valve lever E-and actas a stop forlocking the flushvalve lever in the position shown in Fig. 2 that is, holding (by means of the chain D) the flush-valve D open.

-H by the chain F.

To throw the partL out of its locking positionthat is, into the position indicated in Fig. 1 1 have the following device: H H is a bent lever pivoted at h and having attached to it a weight H which is a partial counterpart for the bell-float F, attached to the part The bell-float F is made hollow and is open at the bottom, as shown. By forming the bell-float F. as above I obtain the following advantage: When the tank is filling, the air imprisoned in the float will keep'the water-line w in the float below the water-line w of the tank, and this displacement will tend to prevent the float from rising as fast as it otherwise wouldthat is, it will become automatically heavier (by the amount of water inclosed) than a closed float of the same dimensions would, but still it will float. The advantage of this added weight becomes apparent if we allow the water to run out of the tank, for then the Waterline 20' in the float F will be above the waterline 10 of the water in the tank, as shown in Fig. 2. Then the float acts as a Weight, and can easily draw down the end Hof the bent lever H H, and the part H, coming in contact with the part L of the trip-lever, throws it out from under the flush-valve lever E (see Fig. 1) and allows the same to tip and to close the valve D.

The operation of my device is as follows: We will suppose'the tank A is normally full, as shown in Fig. 1. Now by pulling the cord P the leverE causes the valve D to open, and while the lever E is up the bent lever L L will be actuated by the weight L causing the part L of the trip-lever to assume a vertical position under the lever H and holdit, as indicated in Fig. 2-that is, the valve D is open and held open, and will continue so until the water in the tank has so far lowered that the' float F will exert sufficient strain on the bent lever H H to cause the part H to press against the part L and push it forward sufficiently to allow the lever E to fall and to close the valve D. The valve D will now remain closed and the water will again accumulate in the tank until the cord P is again pulled.

Having thus fully described my invention, ing a counter-weight H and bell-float F, all what I claim as new, and desire to secure by operating together substantially as and for Letters Patent, isv the purpose set forth.

- In an automatic flushing-tank, the combi- EDGAR O. HUNT. 5 nation of the lever E, adapted to operate a Witnesses:

flushing-valve D, and the flush-valve D with FRANK G. PARKER, v

the locking trip-lever L L, lever H H, hav- MATTHEW M. BLUNT. 

